Transponder incorporated into an electronic device

ABSTRACT

An electronic device. The device comprises a metalization layer and an integrated circuit chip incorporated into the device wherein the integrated circuit chip is capacitively coupled to the metalization layer. The device comprises a first substrate having the metalization layer formed on the substrate, a cap layer covering at least the entire metalization layer and at least a portion of the first substrate not covered by the metalization layer. The integrated circuit chip is coupled to the first substrate, and is placed in proximity and in non-physical contact with the metalization layer. A conductive layer is attached to the integrated circuit chip. The conductive layer has at least a portion placed in a non-physical contact with the metalization layer. The integrated circuit chip is capacitively coupled to the metalization layer through the conductive layer and the metalization layer.

RELATED APPLICATION

This application is a continuation of co-pending U.S. application Ser.No. 10/996,294 filed Nov. 22, 2004, entitled “Transponder IncorporatedInto An Electronic Device” which is hereby incorporated herein by thisreference in its entirety.

FIELD

The present invention relates generally an electronic device thatincorporates a radio frequency (RF) transponder and method of tagging anelectronic device using an RE system.

BACKGROUND

Systems for remote identification of objects are being used for manypurposes, such as identifying an item or object in a warehouse,retailers, stores, dealerships, parking lots, airports, train stationsand/or at any particular location. Such systems use Radio Frequency (RF)signals to communicate information between a RE reader apparatus and anRF transponder attached to the item or the object. The RE transponderincludes a memory component that can store particular information, suchas identification information (e.g., price, identification, serialnumber, product information, etc. . . . ) about the object or the item.The RF transponder also includes an antenna to facilitate thecommunication between the RE reader and the RE transponder. Some systemsinclude both “read” and “write” functions; thus, the RF reader can readinformation previously stored in the RF transponder's memory and the RFtransponder can also write new information into the memory in responseto signals from the RF reader.

Each RF transponder has an individual code containing informationrelated to and identifying the associated object/item. In a typicalsystem, the RE reader sends an RE signal to the remote RF transponder.The antenna in the RE transponder receives the signal from the RFreader, backscatter-modulates the received signal with data temporarilyor permanently stored in the RF transponder (such as data indicating theidentity prices, and/or contents of the object/item to which thetransponder is attached), produces a sequence of signals in accordancewith the transponder's individual code, and reflects this modulatedsignal back to the RF reader to pass the information contained in the RFtransponder to the RF reader. The RF reader decodes these signals toobtain the information from the transponder. Likewise, the transpondermay decode signals received from the reader and write information to thetransponder's memory.

Tagging an object or an item is an important application. Tagging anobject or an item includes at least identifying, authenticating,recognizing, inventorying, checking-in, checking-out, tracking,locating, detecting and sensing the electronic device for many purposes.For instance, there have been many attempts to tag an item such as a CDor a DVD. Such tagging has been employing an RFID system. Attempts havebeen made to place an RFID transponder on the cover or jacket of the CDor the DVD. However, current tagging technology employing RFID systemsdo not successfully read the items/objects 100% of the time, especiallywithout adding complex components to the items to booster the readaccuracy. Additionally, the transponder is only placed on the jacket orcover of the item such as CDs/DVDs thus allowing for possible removal ortampering of the RFID transponder and possibly removing the CDs/DVDsfrom the covers. Such possible removal the actual CDs or DVDs from thecovers defeat the purpose of tagging. Most importantly, the currenttagging technology employs only a short range detection (13.56 MHz) thusdoes not provide for a long range detection.

Merchants, sellers, buyers, surveyors, retailers, libraries, and thelike who distribute, sell, or otherwise require information for CDs orDVDs have the need to track and tag object/items. Thus, many peopleand/or entities rely on such tracking and tagging systems. Such taggingsystem reduces operation costs or needs for manpower in tracking andtagging, increases security of the items, increases efficiency inkeeping a good inventory of the items on premises, and increasesreliability in the authentication of such items, to name a few.

SUMMARY

Embodiments of the present invention pertain to an RFID transponderincorporated directly into an electronic device and methods tagging anelectronic device using the RFID transponder that is incorporateddirectly into the electronic device.

One embodiment of the invention pertains to a device that comprises ametalization layer and an integrated circuit chip incorporated into thedevice wherein the integrated circuit chip is capacitively coupled tothe metalization layer. The device comprises a first substrate havingthe metalization layer formed on the substrate, a cap layer covering atleast the entire metalization layer and at least a portion of thesubstrate not covered by the metalization layer. The integrated circuitchip is coupled to the first substrate, and is placed in proximity andin non-physical contact with the metalization layer. A conductive layeris attached to the integrated circuit chip. The conductive layer has atleast a portion placed in a non-physical contact with the metalizationlayer. The integrated circuit chip is capacitively coupled to themetalization layer through the conductive layer and the metalizationlayer. The integrated circuit chip is an RFID chip in one embodiment andthe metalization layer acts as the antenna that is coupled to the REIDchip capacitively for an REID system. The device can be a CD, CD-ROM,CD-R, CD)-RW, CD-I, DVD, DVD-ROM, DVD-R, and DVD-RAM.

One embodiment of the invention pertains to a device that comprises ametalization layer and an integrated circuit chip incorporated into alabel that is affixed to the device wherein the integrated circuit chipis capacitively coupled to the metalization layer. The device comprisesa first substrate having the metalization layer formed on the substrate.A cap layer covering at least the entire metalization layer. At least aportion of the substrate is not covered by the metalization layer. Thelabel is placed over the substrate. The integrated circuit chip iscoupled to the label. The integrated circuit chip is placed in proximityand in non-physical contact with the metalization layer. A conductivelayer is attached to the integrated circuit chip. The conductive layerhas at least a portion placed in a non-physical contact with themetalization layer. The integrated circuit chip is capacitively coupledto the metalization layer through the conductive layer and themetalization layer. The integrated circuit chip is an REID chip in oneembodiment and the metalization layer acts as the antenna that iscoupled to the RFID chip capacitively for an RFID system. The device canbe a CD, CD-ROM, CD-R, CD-RW, CD-I, DVD, DVD-ROM, DVD-R, and DVD-RAM.

One embodiment of the invention pertains to a device that comprises ametalization layer and an integrated circuit chip incorporated into acenter ring substrate that is affixed to the center of the devicewherein the integrated circuit chip is capacitively coupled to themetalization layer. The device comprises a first substrate having themetalization layer formed on the substrate. A cap layer covers at leastthe entire metalization layer. At least a central portion of thesubstrate is not covered by the metalization layer. The center ringsubstrate is placed over the central portion. The center ring substratecomprises the integrated circuit chip disposed therein, a conductivelayer attached to the integrated circuit chip, and one or more weightbalancing components. The integrated circuit chip is placed such thatthe integrated circuit chip is in proximity and in non-physical contactwith the metalization layer. The conductive layer has at least a portionplaced in a non-physical contact with the metalization layer. Theintegrated circuit chip is capacitively coupled to the metalizationlayer through the conductive layer and the metalization layer. Theintegrated circuit chip is an REID chip in one embodiment and themetalization layer acts as the antenna that is coupled to the RFID chipcapacitively for an RFID system. The device can be a CD, CD-ROM, CD-R,CD-RW, CD-I, DVD, DVD-ROM, DVD-R, and DVD-RAM.

Other embodiments of the present invention pertain to methods whichcomprise providing an electronic device. The electronic device comprisesa first substrate having a metalization layer formed on the substrate, acap layer covering at least all of the metalization layer and at least aportion of the substrate is not covered by the metalization layer. Themethods further comprise providing an RFID transponder, which comprisesidentification information for the electronic device, and providing anRFID reader receptive of the RFID transponder. The RFID transponder isincorporated into the electronic device.

The method similar to above wherein the RFID transponder includes anintegrated circuit chip coupled to the first substrate and placed inproximity and in non-physical contact with the metalization layer and aconductive layer attached to the integrated circuit chip and having atleast a portion placed in a non-physical contact with the metalizationlayer. The integrated circuit chip is capacitively coupled to themetalization layer through the conductive layer and the metalizationlayer.

The method similar to above wherein the RFID transponder includes alabel placed over the substrate, an integrated circuit chip coupled tothe label, and a conductive layer attached to the integrated circuitchip. The integrated circuit chip is placed in proximity and innon-physical contact with the metalization layer. The conductive layerhas at least a portion placed in a non-physical contact with themetalization layer. The integrated circuit chip is capacitively coupledto the metalization layer through the conductive layer and themetalization layer.

The method similar to above wherein the RFID transponder at least acentral portion of the substrate not covered by the metalization layerand a center ring substrate placed over the central portion. The centerring substrate comprises an integrated circuit chip disposed therein. Aconductive layer is attached to the integrated circuit chip. One or moreweight balancing components are deposited on the center ring substrate.The integrated circuit chip is placed such that the integrated circuitchip is in proximity and in non-physical contact with the metalizationlayer. The conductive layer has at least a portion placed in anon-physical contact with the metalization layer. The integrated circuitchip is capacitively coupled to the metalization layer through theconductive layer and the metalization layer.

Other embodiments are also described herein.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1A-1B illustrate an exemplary device that can incorporate an RFIDtransponder;

FIG. 2 illustrates an exemplary RFID transponder incorporated into adevice;

FIG. 3 illustrates an exemplary REID circuit chip in the form of afunctional block;

FIG. 4 illustrates another exemplary RFID circuit chip in the form of afunctional block;

FIG. 5 illustrates an exemplary RFID transponder incorporated into adevice;

FIGS. 6-12 illustrate exemplary configurations of a conductive layercoupled to an RFID circuit chip;

FIGS. 13-14 illustrate an exemplary device that directly incorporates anRFID transponder;

FIGS. 15-23 illustrate other exemplary devices that directlyincorporates an RFID transponder;

FIG. 24 illustrates an exemplary method of identifying a device thatincorporates an RFID transponder; and

FIG. 25 illustrates an exemplary playback system for use in oneexemplary aspect of the present invention.

DETAILED DESCRIPTION

Embodiments of the present invention pertain to an RFID transponder(tag) incorporated into an electronic device and methods tagging anelectronic device using the RFID transponder that is incorporated intothe electronic device.

As mentioned above. REID devices are currently used for remoteidentification of objects. The ability to remotely identify or detect anitem using an RFID system is important for many purposes such asidentifying/detecting an item or an object in a warehouse, retailers,stores, libraries, dealerships, parking lots, airports, train stations,and/or at many other locations. An RFID system needs an REID reader andan RFID transponder (tag). An antenna is typically formed on the RFIDtransponder as is know in the art. Manufacturers have been unable tomake or place an RFID transponder directly on a device that has a metalstructure included therein because an antenna structure or loop cannotbe printed on the metal and still function properly. Thus, manufacturershave been unable to incorporate a RFID transponder directly on a CD(Compact Disc), CD-ROM (Compact Disc Read Only Memory), CD-R (CompactDisc Recordable), CD-RW (Compact Disc Rewritable), CD-I (Compact DiscInteractive), DVD (Digital Video Disc or Digital Versatile Disc),DVD-ROM (Digital Video Disc Read Only), DVD-R (Digital Video DiscRecordable), and DVD-RAM (Digital Video Disc Rewritable), and otherdevices, electronic devices, or discs that include a metal structure.One reason that the manufacturers have been unable to incorporate a RFIDtransponder directly on such devices is that the antenna for the RFIDtransponder cannot be printed on the devices directly due to theinterference by the metal structures in these devices. An antennastructure or loop gets detuned and fails to function properly whenplaced in closed proximity with or printed directly on a metalstructure. It has been thought of that when an electrical field of anytransmitter such as an antenna approaches a conductor such as a metalstructure, the transmitter goes to zero at the surface of the conductorand as such, the transmitter (antenna) gets detuned.

Embodiments of the present invention overcome the problem discussedabove. Embodiments of the present invention incorporate an RFIDtransponder directly into an electronic device that has a metalstructure included therein. The RFID transponder is said to be directlyincorporated into the device because the RFID transponder is not placedon a jacket, cover, or packaging of the device. Instead, the RFIDtransponder, after the incorporation, becomes part of the device andcannot be easily removed from the device. In one aspect, the RFIDtransponder is incorporated directly into the device by utilizing themetal structure of the device as an antenna for the RFID transponder.The RFID transponder may have more than one antenna and may use morethan one metal structure provided in the device for such antennas.Additionally, the metal structure of the device that is utilized as theantenna for the RFID transponder is capacitively coupled to anintegrated circuit chip of the RFID transponder. The REID transponder isformed directly on the device while utilizing an already existing metalstructure on the device as an antenna structure. The RFID transponder ofthe embodiments of the present invention can work in a wide range ofhigh frequency from low to high, including frequency ranges from about800 MHz to 3 GHz. The RFID transponder thus allows for longer rangedetection.

In one embodiment, an electronic device is any one of a CD, CD-ROM,CD-R, CD-RW, CD-I, DVD, DVD-ROM, DVD-R, or DVD-RAM. An RFID transponderis formed directly on the device utilizing metalization layer providedin each of these devices as the antenna for the RFID transponder. Themetalization layer thus, besides performing other purposes for thedevice, also acts as the antenna for the REID transponder. The RFIDtransponder includes an integrated circuit, typically an REID integratedcircuit (RFID IC) chip coupled to the device. The RFID IC chip iscapacitively coupled to the metalization layer. The RFID IC chip isplaced at a predetermined distance (e.g., between about 0-3 mm) awayfrom the metalization layer of the device so that it is in anon-physical contact with the metalization layer. The RFID IC chip maybe first incorporated into a strap which is then coupled to the surfaceof the device. The REID IC chip is placed sufficiently close to themetalization layer such that energies can easily be transferred betweenthe RFID IC chip and the metalization layer to form the RFIDtransponder. This is referred to as “capacitive coupling” in theembodiments of the present invention.

FIGS. 1A-1B illustrates an electronic device 100 that can benefit froman RFID transponder (tag) formed in accordance to embodiments of thepresent invention. The electronic device 100 an be a CD, CD-ROM, CD-R,CD-RW, CD-I, DVD, DVD-ROM, DVD-R, and DVD-RAM as shown in FIGS. 1A-1J.The device 100 includes a center portion 102 and an opening 104. Theopening 104 typically allows a component from a reading machine (e.g., aCD player/recorder) to be inserted therethrough for controlling andpositioning the device 100. The center portion 102 is typically aplastic area or a non conductive area of the device 100. The device 100typically includes several important layers shown in FIG. 1B. The device100 includes a substrate 110, which could be the same material as thecenter portion 102 and be made of plastic. On top of the device 100 isformed a metalization layer 120. The metalization layer 120 typicallydoes not cover the center portion are 102 of the device 100. In oneembodiment, the metalization layer includes information coded thereonusing reflective and non-reflective coatings. The device 100 may alsoinclude a cap layer 140, typically a protective and non-conductive layerthat also functions to protect the metalization layer 120. The cap layer140 covers at least the entire surface of the metalization layer 120. Insome embodiments, the cap layer 140 covers also the center portion 102.In other embodiments, a label 150 is also included and placed over thedevice 100. The label 150 typically contains visible information thatidentifies and provides some information about the device, such as thename of an album or a movie recorded on the device 100. The label 150may or may not cover the entire surface of the device 100 (except theopening 104).

FIG. 2 illustrates an embodiment of the invention that pertains to adevice 201 (e.g., a CD) directly incorporates an RFID transponder on thedevice. The device 201 that comprises a metalization layer 202 and anintegrated circuit chip 208 incorporated into the device 201 wherein theintegrated circuit chip (e.g., an RFID IC chip) 208 is capacitivelycoupled to the metalization layer 202. The device 201 comprises a firstsubstrate 200 having the metalization layer 202 formed on a surface ofthe substrate 200. A cap layer 204 covering at least the entiremetalization layer 202 is also included in the device 201. The cap layer204 may also cover the portion 206. As shown in FIG. 2, in oneembodiment, at least a portion 206 of the substrate 200 is not coveredby the metalization layer 202. Similar to previously shown in FIG. 1A,the device 201 may include a center portion (which could be the portion206 shown in FIG. 2) that does not have the metalization layer 202formed thereon. In one embodiment, a label 212 providing visualinformation or display for the device 201 may be included in the device201 and is placed over the cap layer 204. The label 212 may also coverthe portion 206.

Still with FIG. 2, the integrated circuit chip 208 is coupled to thefirst substrate 200, and is placed in proximity and in non-physicalcontact with the metalization layer 202. The integrated circuit chip 208may be coupled to the portion 206, directly on the substrate 200 or onthe cap layer 204 if the cap layer 204 covers the portion 206 of thesubstrate 200. In one embodiment, the integrated circuit chip 208 isplaced at a distance between about 0 mm and about 3 mm to themetalization layer 202. The integrated circuit chip 208 is placed closeenough to the metalization layer 202 for a capacitive coupling betweenthe integrated circuit chip 208 and the metalization layer 202, but notphysically touching so as to cause the RFID transponder to not work. Inone embodiment, a conductive layer 210 is attached to the integratedcircuit chip 208. The conductive layer 210 has at least a portion beingpositioned or placed in a non-physical contact with the metalizationlayer 202. The integrated circuit chip 208 is capacitively coupled tothe metalization layer 202 through the conductive layer 210 and themetalization layer 202. The integrated circuit chip is an RFID chip, inone embodiment, and the metalization layer 202 acts as an antenna thatis coupled to the RFID chip 208 capacitively for an RFID transponder.The device can be a CD, CD-ROM, CD-R, CD-RW, CD-I, DVD, DVD-ROM, DVD-R,and DVD-RAM.

The integrated circuit chip 208 may be deposited in a second substrate300 (FIG. 3), which is then coupled to the first substrate 200. Thesecond substrate 300 can be a plastic film, plastic sheet, or othersuitable materials. The integrated circuit chip 208 may be a functionalblock 304 having a top surface 304-T upon which a circuit element issituated (not shown). The circuit element on the top surface may be anordinary integrated circuit (IC) for any particular function. The IC maybe designed to receive power from another circuit for the operation ofan RFID transponder. The IC may also be designed to receive power froman energy source (e.g. battery) for the operation of the RFID tag. Inone embodiment, the functional block 304 has a trapezoidal cross-sectionwhere the top of the block 304 is wider than the bottom of the block304. The functional block 304 may also have other suitable/desiredshapes. The functional block 304 may be created from a host substrateand separated from this substrate. Methods of such a functional block304 are known in the art. The functional block 304 may be a NanoBlock™,which is a trademark of Alien Technology Corporation, Morgan Hill,Calif.

In one embodiment, the functional block 304 is placed in the secondsubstrate 300 using a Fluidic Self-Assembly (FSA) process. Of course,other placement methods can be used. In one embodiment, the secondsubstrate 300 includes a receptor 302 configured to receive thefunctional block 304. The receptor 302 may be a recessed region formedinto the second substrate 300. In the embodiment where the functionalblock 304 has the trapezoidal shape, the receptor 302 has a similarshape and/or size so that the block 304 can be deposited therein. Thereceptor 302 thus is configured with a complimentary shape for theparticular shape of the functional block 304 in one embodiment.

The functional block 304 may be deposited into the receptor 302 by anFSA method described in U.S. Pat. No. 5,545,291 which is herebyincorporated by its reference in its entirety. In one embodiment, thefunctional block 304 is recessed within the second substrate 300 orplaced below or at a surface 300-S of the second substrate 300. The FSAprocess may be performed with a web material in which a web material forthe second substrate 300 is provided. The web may contain a plurality ofreceptors 302. The web material is advanced through a web processapparatus. A slurry solution (e.g., an FSA slurry) containing aplurality of functional blocks 304 is dispensed over web material. Theblocks 304 would then fall into receptors 302 formed on the webmaterial. The web material can then be sliced, singulated, separated soto form a plurality of substrates 300 each comprising one or morefunctional blocks 304.

In one embodiment, the functional block 304 includes one or more contactpads 306 so that conductive elements can be connected to the functionalblock 304. Multiple contact pads may be included so that the functionalblock 304 can be coupled to more that one antennas or other devices. Thecontact pads 306 can be formed on top of the functional block 304. Asshown in FIG. 3, a conductive layer 308 is connected to the contact pads306. In one embodiment, an insulation layer (not shown) such as aplanarization layer may be included on top of the functional block 304that has been deposited in the receptor 302. The insulation layer mayprovide a flat surface to the second substrate 300 as well as insulatecertain components on top of the functional block 304. The insulationlayer may include one to more vias (not shown) created therethrough.Electrical interconnection to the contact pads 306 would be establishedthrough the vias. Forming the insulation layer and the vias are wellknown in the art and can be done by methods including laser drilling orphotolithographic etching. The conductive layer 308 can be formed of asuitable conductors and can include metallic films, conductive polymers,or inks filled with conductive particles. The conductive layer 308 canbe formed by a method such as a subtractive process (usingetching/lithography or laser ablation) on a metal film, or an additiveprocess (such as printing metal traces.

In one embodiment, the conductive layer 308 is a conductive trace thatextends from the functional block 304. For instance, the contact pads306 may be extended so that it also forms the conductive layer 308. Thecontact pads 306 may also be integral parts of the conductive layer 308.

FIG. 4 illustrates an embodiment where the integrated circuit chip 208is incorporated into a second substrate 400 and recessed below a surface400-S of the substrate 400. The structure in FIG. 4 is similar to and ismade similarly to the structure in FIG. 3 in all aspects but that thestructure in FIG. 4 shows a functional block 404 recessed below thesurface 400-S. Thus, the second substrate 400 includes a receptor 402having the functional block 404 deposited therein as previouslydescribed. The functional block 404 includes contact pads 406 formed ona surface 404-T of the block 404, in one embodiment. A conductive layer408 is coupled to the contact pads 406 such that electricalinterconnection can be established to the functional block 404.

In one embodiment, the conductive layer 408 is a conductive trace thatextends from the functional block 404. For instance, the contact pads406 may be extended so that it also forms the conductive layer 408. Thecontact pads 406 may also be integral parts of the conductive layer 408.

In one embodiment, an insulation layer (not shown) such as aplanarization layer may be included on top of the functional block 404that has been deposited in the receptor 402. The insulation layer mayprovide a flat surface to the second substrate 400 as well as insulatecertain components on top of the functional block 404. The insulationlayer is particularly helpful to provide a flat and even surface sincethe functional block 404 is recessed below the surface 400-S of thesecond substrate 400. The insulation layer may include one to more vias(not shown) created therethrough. Electrical interconnection to thecontact pads 406 would be established through the vias.

In a particular device, a metalization layer such as the metalizationlayer 202 may be formed on a non-conductive or insulation layer. FIG. 5illustrates such an embodiment. In FIG. 5, a device 501 similar to thedevice 201 includes a non-conductive layer 512 on a substrate 500 uponwhich a metalization layer 502 is formed. The metalization layer 502 isformed on the non-conductive layer 512. The non-conductive layer 512 maycover the entire surface of the substrate 500, or not. In oneembodiment, the metalization layer 502 is not formed over all of thesurface of the substrate 500 or the non-conductive layer 512 such that aportion 506 having no metalization layer 502 is provided for the device501. As before, a cap layer 504 is provided and formed over themetalization layer 502 and may also be formed over the portion 506.Additionally, a label 514 providing visual information or display forthe device 501 may be included in the device 501 and is placed over thecap layer 504 and may also be placed over the portion 506.

An RFID integrated circuit chip 508 similar to previously described(e.g., REID integrated circuit chip 208) may be coupled to the device501 as shown in FIG. 5 or as previously described. As illustrated, theintegrated circuit chip 508 includes a conductive layer 510 that has aportion that is in a non-physical contact with the metalization layer502. As before, the RFID integrated circuit chip 508 is placed in aclose proximity but in a non-physical contact with the metalizationlayer 502. As shown in FIG. 5, the RFID integrated circuit chip 508 isplaced in the portion 506 that does not include any metalization layer502. A portion of the conductive layer 510 may very well be placed in aphysical contact with the metalization layer 502. As before, the RFIDintegrated circuit chip 508 is capacitively coupled to the metalizationlayer 502 such that the metalization 502 acts as an antenna for an RFIDtransponder for the device 501. The REID integrated circuit chip 508 maybe deposited in a second substrate which is then adhered to the firstsubstrate 500 as previously discussed.

The conductive layer that is coupled to the RFID integrated circuit chipacts as a coupler for the transponder. The conductive layer providesadditional surface area for the REID integrated circuit chip so that themetalization layer can capacitively couple to the REID integratedcircuit chip. The conductive layer for the RFID transponder may have anyconfiguration. The conductive layer may be of a straight, curved,circular, loop, dipole structure, folded, or folded-dipole structure,for examples.

FIGS. 6-12 illustrate a few of the exemplary configurations for theconductive layers (e.g., 210, 308, 408, and 510) that are coupled to,attached to, or formed on the REID integrated circuit chip. FIG. 6illustrates a conductive layer 602 having a loop configuration orcircular configuration. The conductive layer 602 is coupled to contactpads 606 that are formed on an RFID integrated circuit chip 604. Asillustrated, the RFID integrated circuit chip 604 is deposited in areceptor 622 that is formed on a substrate 600. The conductive layer 602is formed on a surface 600-S of the substrate 600 and connected to theREID integrated circuit chip 604 through the contact pads 606. In oneembodiment, the substrate 600 having the RFID integrated circuit chip602 deposited therein and the conductive layer 602 formed thereon isplaced on a substrate portion of a device (such as portions 206 and506). The substrate 600 is placed on the portion that does not comprisea metal structure or a metalization layer as previously discussed. Theconductive layer 602 may be partially touching the metalization layer ofthe device but will have a portion that is not in physical contact withthe metalization layer of the device.

FIG. 7 illustrates a conductive layer 702 with a curved configuration.

FIG. 8 illustrates a conductive layer 802 with a straight configuration.FIG. 9 illustrates a conductive layer 902 with a dipole structureconfiguration. FIG. 10 illustrates a conductive layer 1002 with a foldeddipole configuration. FIG. 11 illustrates a conductive layer 1102 with acurved dipole configuration. FIG. 12 illustrates a conductive layer 1202with another example of a curved dipole configuration. It will beapparent to those skilled in the art that other structures for theconductive layer might be possible.

FIGS. 13-14 illustrate an exemplary embodiment where an REID transponder1306 is directly incorporated into an electronic device such as a CD1300. In the present embodiment, the CD 1300 includes a center portion1302 with no conductive material or no metalization layer. The CD 1300also includes an opening 1304. FIG. 14 illustrates a cross section ofthe CD 1300 which includes a substrate 1320 which may be made of aplastic material. On the substrate 1320, a metalization layer 1322 isformed. The metalization layer 1322 is coded with information stored onthe CD 1300 using methods known in the art. The CD 1300 also includes acap layer 1324 covering at least all of the metalization layer 1322. Themetalization layer 1322 is not formed over the center portion 1302 ofthe CD 1300. The RFID transponder 1306 can be formed as previouslydescribed. In one embodiment, the RFID transponder 1306 includes asecond substrate having an REID IC chip 1308 deposited therein aspreviously described.

In the present embodiment, the RFID transponder 1306 is placed mostly onthe center portion 1302. The RFID transponder 1306 may be placed nearthe edge of the center portion 1302 as shown in FIG. 13. The RFIDtransponder 1306 can be adhered to the center portion 1302 usingadhesive. Other techniques of coupling the RFID transponder 1306 to theCD 1300 might be possible. The RFID transponder 1306 is placed so thatthe RFID IC chip 1308 is not placed over any part of the CD 1300 thatcomprises the metalization layer 1322. Portion of the second substrateof the RFID transponder 1306 can touch or can be in a physical contactor overlap with a part of the CD 1300 that comprises the metalizationlayer 1322 without affecting the function of the RFID transponder 1306so long as the RFID IC chip 1308 is not physically contacting themetalization layer 1322. The RFID IC chip 1308 is only capacitivelycoupled to the metalization layer 1322 of the CD 1300. The RFIDtransponder 1306 utilizes the metalization layer 1322 of the CD 1300 asan antenna for the RFID transponder 1306.

In one embodiment, the CD 1300 is balanced with one or more weightbalancing components 1340. For a device such as a CD or a DVD to workwell, the weight of the device must be balanced to allow the device tospin at high speeds. The weight balancing components 1340 may bestructures that have similar weights as the RFID transponder 1306. Theweight of the weight balancing components 1340 though need not match theweight of the RFID transponder 1306 for the CD 1300 to be well balanced.The weight balancing components 1340 may be placed along the centerportion 1302 in a predetermined fashion so as to achieve balancespinning weight for the CD 1300. In some embodiments, the RFID IC chip1308 may be created so small and/or thin that balancing may not benecessary.

In one embodiment, a label, not shown may be placed over the entiresurface of the CD 1300 after the RFID transponder 1306 is incorporatedinto the CD 1300. The label may cover all areas of the CD 1300 exceptfor the opening 1304. A label for a device such as the CD 1300 is wellknown in the art. In some embodiments, the label may be the layer thatincludes the desired weight balancing components 1340 such that when thelabel is placed over the CD 1300, the weight would be balanced.

FIG. 15 illustrates another exemplary embodiment where an RFDtransponder 1306 is incorporated into an electronic device such as a CD1300. The embodiment in FIG. 15 is similar to the embodiment show inFIG. 13 above in all aspects. In addition, in this embodiment, the RFIDtransponder 1306 includes a conductive layer 1310 which acts as acoupler or coupling extension for the RFID transponder 1306 thatprovides an extension for the RFID transponder IC chip 1308 so that theRFID IC chip 1308 can be capacitively coupled to the metalization layer1322 of the CD 1300. The conductive layer 1310 can be formed on thesecond substrate of the RFID transponder 1306 as previously described.Alternatively, the conductive layer 1310 can be formed or molded intothe CD 1300 along an area of the center portion 1302. When the RFIDtransponder 1306 is coupled or adhered to the CD 1300, the conductivelayer 1310 is electrical interconnected to the RFID IC chip 1308. Forinstance, the RFID IC chip 1308 may include contact pads (not shown)such that when the RFID transponder 1306 is coupled or embedded into theCD 1300, the conductive layer 1310 will be in a physical contact withthe contact pads.

As shown here, the conductive layer 1310 is placed on the CD 1300 suchthat at least a portion of the conductive layer 1310 is not in aphysical contact with the metalization layer.

As before, in one embodiment, the CD 1300 is balanced with one or moreweight balancing components 1340. The weight balancing components 1340may be placed along the center portion 1302 in a predetermined fashionso as to achieve balance spinning weight for the CD 1300. A label, notshown may be also placed over the entire surface of the CD 1300 afterthe RFID transponder 1306 is incorporated into the CD 1300 and theconductive layer 1310 establishing the contact with the RFID IC chip1308. The label may cover all areas of the CD 1300 except for theopening 1304. The label may also include the weight balancing components1340 as previously discussed.

FIG. 16 illustrates another exemplary embodiment where an RFIDtransponder 1306 is incorporated into an electronic device such as a CD1300. The embodiment in FIG. 16 is similar to the embodiment show inFIG. 13 or 15 above in all aspects. In addition, in this embodiment, theRFID transponder 1306 includes a conductive layer 1310 which acts as acoupler for the RFID transponder 1306 that provides an extension for theRFID transponder IC chip 1308 so that the RFID IC chip 1308 can easilybe capacitively coupled to the metalization layer 1322 of the CD 1300.The conductive layer 1310 shown in FIG. 16 has a straight configurationand includes an area that is in physical contact with a portion of theCD that comprises the metalization layer 1322. The conductive layer 1310has a portion that is not in a physical contact with the metalizationlayer. The conductive layer 1310 can be formed on the second substrateof the RFID transponder 1306 as previously described. As shown in FIG.16, the RFID IC chip 1308 includes contact pads 1312 that interconnectto the conductive layer 1310.

As before, in one embodiment, the CD 1300 is balanced with one or moreweight balancing components 1340 which may be placed in locations thatwill balance the weight for the CD 1300. A label, not shown may be alsoplaced over the entire surface of the CD 1300 after the RFID transponder1306 is incorporated into the CD 1300 and the conductive layer 1310establishing the contact with the REID IC chip 1308. The label may coverall areas of the CD 1300 except for the opening 1304. The label may alsoinclude the weight balancing components 1340 as previously discussed.

FIG. 17 illustrates another exemplary embodiment where an RFIDtransponder 1306 is incorporated into an electronic device such as a CD1300. The embodiment in FIG. 17 is similar to the embodiment show inFIG. 13, 15, or 16 above in all aspects. In addition, in thisembodiment, the RFID transponder 1306 includes a conductive layer 1310which acts as a coupler for the RFID transponder 1306 that provides anextension for the RFID transponder IC chip 1308 so that the REID IC chip1308 can easily be capacitively coupled to the metalization layer 1322of the CD 1300. The conductive layer 1310 shown in FIG. 17 has a dipoleand loop configuration and includes an area that is in physical contactwith a portion of the CD that comprises the metalization layer 1322. Theconductive layer 1310 has a portion that is not in a physical contactwith the metalization layer. The conductive layer 1310 can be formed onthe second substrate of the RFID transponder 1306 as previouslydescribed.

As before, in one embodiment, the CD 1300 is balanced with one or moreweight balancing components 1340 which may be placed in locations thatwill balance the weight for the CD 1300. A label, not shown may be alsoplaced over the entire surface of the CD 1300 after the RFID transponder1306 is incorporated into the CD 1300 and the conductive layer 1310establishing the contact with the RFID IC chip 1308. The label may coverall areas of the CD 1300 except for the opening 1304. The label may alsoinclude the weight balancing components 1340 as previously discussed.

FIG. 18 illustrates an exemplary embodiment where an RFID transponder1316 is incorporated directly into an electronic device such as a CD1300. In the present embodiment, the CD 1300 includes a center portion1302 with no conductive material or no metalization layer. The RFIDtransponder 1316 is formed on the center portion 1302. The CD 1300 alsoincludes an opening 1304, FIG. 14 illustrates a cross section of the CD1300 which includes a substrate 1320 which may be made of a plasticmaterial. On the substrate 1320, a metalization layer 1322 is formed.The metalization layer 1322 is coded with information stored on the CD1300 using methods known in the art. The CD 1300 also includes a caplayer 1324 covering at least all of the metalization layer 1322. Themetalization layer 1322 is not formed over the center portion 1302 ofthe CD 1300.

In the present embodiment, to form the RFID transponder 1316, an RFID ICchip 1308 is molded, embedded, placed, coupled, or otherwise adhered tothe center portion 1302. Adhesive may be used to coupled the RFID ICchip 1308 to the center portion 1302. Other techniques of coupling theRFID IC chip 1308 to the CD 1300 might be possible. The RFID IC chip1308 is not placed over any part of the CD 1300 that comprises themetalization layer 1322. The RFID IC chip 1308 is placed at apredetermined distance (e.g., between about 0.3 mm) away from the areathat comprises the metalization layer 1322. A conductive layer 1310 isinterconnected to the RFID IC chip 1308, in one embodiment, connected tocontact pads (not shown) formed on the REID IC chip 1308. In the presentembodiment, the conductive layer 1310 is formed directly on the centerportion 1302. The conductive layer 1310 may be embedded, placed,coupled, or otherwise adhered to the center portion 1302. At least someportions of the conductive layer 1310 are not in a physical contact withor overlap with a part of the CD 1300 that comprises the metalizationlayer 1322. The RFID IC chip 1308 is only capacitively coupled to themetalization layer 1322 of the CD 1300 via the conductive layer 1310. Asbefore, the RFID transponder 1316 utilizes the metalization layer 1322of the CD 1300 as the antenna for the RFID transponder 1316.

In one embodiment, the CD 1300 is balanced with one or more weightbalancing components 1340. The weight balancing components 1340 may beplaced along the center portion 1302 in a predetermined fashion so as toachieve balance spinning weight for the CD 1300. In one embodiment, alabel, not shown may be placed over the entire surface of the CD 1300after the RFID transponder 1316 is formed on the CD 1300. The label maycover all areas of the CD 1300 except for the opening 1304. The labelmay also include the weight balancing components 1340 as previouslymentioned.

FIGS. 19-20 illustrate an exemplary embodiment where an RFID transponder1306 is directly incorporated into an electronic device such as a CD1300. In the present embodiment, the CD 1300 includes a center portion1302 with no conductive material or no metalization layer. The CD 1300also includes an opening 1304. FIG. 20 illustrates a cross section ofthe CD 1300 which includes a substrate 1320 which may be made of aplastic material. Optionally, on the substrate 1320, a non-conductivelayer 1344 is provided. On the substrate 1320 (or on the non-conductivelayer 1344), a metalization layer 1322 is formed. The metalization layer1322 is coded with information stored on the CD 1300 using methods knownin the art. The CD 1300 also includes a cap layer 1324 covering at leastall of the metalization layer 1322. The metalization layer 1322 is notformed over the center portion 1302 of the CD 1300.

In one embodiment, an RFID transponder 1306 is formed on or includedinto a label 1330 of the CD 1300 (FIG. 20). In the present embodiment,an RFID IC chip 1308 is embedded into the label 1330 using methods knownin the art (e.g., FSA). The chip 1308 may also be placed into the label1330 using other methods. The label 1330 may be a second substrate aspreviously described and include a receptor configured to receive thechip 1308. The chip 1308 may also be adhered to the label 1330 using aconvenient technique such as using adhesive. A conductive layer 1310 isthen formed on the label 11130 and interconnected to the chip 1308. Thechip 1308 may include contact pads (not shown) that the conductive layer1310 is connected to. A planarization layer (not shown) may be placedover the side label 1330 to provide a smooth surface and a protectivelayer for the chip 1308. In an alternative embodiment, the conductivelayer 1310 is formed on the CD 1300 and is connected to the chip 1308when the label 1330 is placed over the CD 1300. The label 1330 is thenplaced over the CD 1300. The label 1330 has a portion 1331 that overlapswith the center portion 1302 when the label 1330 is placed over the CD1300. The chip 1308 and portions of the conductive layer 1310 is formedin the portion 1331 such that when the label 1330 is placed over the CD1300, the chip 1308 is not in a physical contact with a part of the CDthat comprises the metalization layer 1322. Additionally, when the label1330 is placed over the CD 1300, a portion of the conductive layer 1310is also not in a physical contact with the part of the CD that comprisesthe metalization layer 1322. In one embodiment, the conductive layer1310 has a circular configuration and does not have a part that overlapsthe part of the CD that comprises the metalization layer 1322. The RFIDtransponder 1306 forms a capacitive coupling to the metalization layer1322 utilizing the metalization layer 1322 as an antenna layer.

In one embodiment, the RFID transponder 1306 can be formed as previouslydescribed and then laminated or otherwise coupled to the label 1330(FIG. 21). In the present embodiment, the RFID transponder 1306 includesa second substrate 1380 having an RFID IC chip 1308 deposited therein.The RFID transponder 1306 also includes a conductive layer 1310 formedon the second substrate 1380. The second substrate 1380 with all thenecessary components is then laminated or adhered to the label 1330 asshown in FIG. 21. The label 1330 is then placed over the CD 1300. Thelabel 1330 has a portion 1331 that overlaps with the center portion 1302when the label 1330 is placed over the CD 1300. The RFID transponder1306 is laminated or adhered to the portion 1331 such that when thelabel 1330 is placed over the CD 1300, the chip 1308 is not in aphysical contact with a part of the CD that comprises the metalizationlayer 1322. Additionally, when the label 1330 is placed over the CD1300, a portion of the conductive layer 1310 is also not in a physicalcontact with the part of the CD that comprises the metalization layer1322. In one embodiment, the conductive layer 1310 has a circularconfiguration and does not have a part that overlaps the part of the CDthat comprises the metalization layer 1322. The RFID transponder 1306forms a capacitive coupling to the metalization layer 1322 utilizing themetalization layer 1322 as an antenna layer.

In one embodiment, the CD 1300 is balanced with one or more weightbalancing components 1340 as previously mentioned. The weight balancingcomponents 1340 may be placed on the label 1330) for example, along theportion 1331 of the label 1330. Alternatively, the weight balancingcomponents 1340 may be placed along the center portion 1302 in apredetermined fashion so as to achieve balance spinning weight for theCD 1300 after the label 1300 is affixed thereto.

FIGS. 22-23 illustrate an exemplary embodiment where an RFID transponder1366 is incorporated into an electronic device such as a CD 1300. In thepresent embodiment, the CD 1300 includes a center portion 1302 with noconductive material or no metalization layer. The CD 1300 also includesan opening 1304. FIG. 4 illustrates a cross section of the CD 1300 whichincludes a substrate 1320 which may be made of a plastic material. Onthe substrate 1320, a metalization layer 1322 is formed. Themetalization layer 1322 is coded with information stored on the CD 1300using methods known in the art. The CD 1300 also includes a cap layer1324 covering at least all of the metalization layer 1322. Themetalization layer 1322 is not formed over the center portion 1302 ofthe CD 1300.

As illustrated in FIG. 23, in one embodiment, an RFID transponder 1366includes a center ring structure or substrate 1350 which is placed onthe center portion 1302 of the CD 1300. The center ring structure 1350includes an REID IC chip 1305 incorporated therein. In the presentembodiment, the RFID IC chip 1308 is embedded into the center ringstructure 1350 using methods known in the art (e.g., FSA). The chip 1308may also be placed into the center ring structure 1350 using othermethods. The center ring structure 1350 is a second substrate that isadhered, coupled, or otherwise attached to the substrate 1320 of the CD1300 at the center portion 1302. The center ring structure 1350 includesa receptor (not labeled) that may be configured to receive the chip1308. Alternatively, the chip 1308 may also be adhered to the centerring structure 1350 using a convenient technique such as using adhesive.A conductive layer 1310 is then formed on the center ring structure 1350and interconnected to and extended from the chip 1308. The chip 1308 mayinclude contact pads (not labeled) that the conductive layer 1310 isconnected to. The center ring structure 1350 is placed over the CD 1300at the center portion 1302. The center ring structure 1350 may cover theentire center portion 1302 or may only cover a portion of the centerportion 13002. The center ring structure 1350 is placed on the CD 1300such that the chip 1308 and portions of the conductive layer 1310 arenot in physical contacts with a part of the CD that comprises themetalization layer 1322. In one embodiment, the conductive layer 1310has a circular configuration and does not have a part that overlaps thepart of the CD that comprises the metalization layer 1322. The RFIDtransponder 1366 forms a capacitive coupling to the metalization layer1322 utilizing the metalization layer 1322 as an antenna layer.

In one embodiment, the RFID transponder 1366 includes one or more weightbalancing components 1340 similar to previous embodiments (FIGS. 22-23).The weight balancing components 1340 may be placed or embedded directlyinto the center ring structure 1350. Alternatively, the weight balancingcomponents 1340 may be placed along the center portion 1302 in apredetermined fashion so as to achieve a balance spinning weight for theCD 1300 after the RFID transponder 1366 is affixed thereto.

In one embodiment, a label, not shown may be placed over the entiresurface of the CD 1300 after the RFID transponder 1366 is incorporatedinto the CD 1300. The label may cover all areas of the CD 1300 exceptfor the opening 1304.

FIG. 24 illustrates an exemplary method 2300 of processing an electronicdevice in accordance to embodiments of the present invention. Theelectronic device may be a CD 1300 or other electronic device such as aCD, CD-ROM, CD-R, CD-RW, CD-I, DVD, DVD-ROM, DVD-R, and DVD-RAM.Processing the device includes tagging which may include, but is notlimited to identifying, authenticating, recognizing, inventorying,checking-in, checking-out, tracking, locating, and sensing theelectronic device. In the embodiments of the present invention, taggingis achieved using an RFID system comprises using an RFID reader and anRFID transponder made in accordance to embodiments of the presentinvention. At box 2302, an electronic device with identificationinformation for the electronic device is provided. As previouslydescribed, the electronic device comprises a first substrate having ametalization layer formed on the substrate, a cap layer covering atleast all of the metalization layer and at least a portion of thesubstrate is not covered by the metalization layer. At box 2304, an RFIDtransponder according to embodiments of the present invention isobtained. The RFID transponder is incorporated into the device aspreviously described. The RFID tag includes an RFID circuit chip that iscapacitively coupled to the metalization layer thus creating the RFIDtransponder. At box 2306, an RFID reader receptive of the RFIDtransponder is provided. The RFID transponder comprises theidentification information and is incorporated into the electronicdevice.

In another embodiment, a method similar to method 2300 is provided. Themethod similar to method 2300 except that the RFID transponder includesthe integrated circuit chip coupled to the first substrate and placed inproximity and in non-physical contact with the metalization layer and aconductive layer attached to the integrated circuit chip and having atleast a portion placed in a non-physical contact with the metalizationlayer. The integrated circuit chip is capacitively coupled to themetalization layer through the conductive layer and the metalizationlayer.

In another embodiment, a method similar to method 2300 is provided. Themethod similar to method 2300 except that the RFID transponder includesa label placed over the substrate, an integrated circuit chip coupled tothe label, and a conductive layer attached to the integrated circuitchip. The integrated circuit chip is placed in proximity and innon-physical contact with the metalization layer. The conductive layerhas at least a portion placed in a non-physical contact with themetalization layer. The integrated circuit chip is capacitively coupledto the metalization layer through the conductive layer and themetalization layer.

In another embodiment, a method similar to method 2300 is provided. Themethod similar to method 2300 except that the RFID transponder is formedin a center ring substrate as previously described. At least a centralportion of the substrate not covered by the metalization layer and acenter ring substrate placed over the central portion. The center ringsubstrate comprises an integrated circuit chip disposed therein. Aconductive layer is attached to the integrated circuit chip. One or moreweight balancing components are deposited on the center ring substrate.The integrated circuit chip is placed such that the integrated circuitchip is in proximity and in non-physical contact with the metalizationlayer. The conductive layer has at least a portion placed in anon-physical contact with the metalization layer. The integrated circuitchip is capacitively coupled to the metalization layer through theconductive layer and the metalization layer.

In one embodiment, an electronic device such as a CD or DVD is taggedusing an RFID transponder that is incorporated directly into theelectronic device in accordance to exemplary embodiments of the presentinvention. In one embodiment, a CD or DVD is tagged using such RFIDtransponder.

In another embodiment, a device such as a CD or DVD that is tagged usingan RFID transponder that is incorporated directly into the electronicdevice is checked in or out of a library using a complimentary REIDreader, wherein the RFID transponder includes information oridentification information about the device and communicates/transmitsthe information the RFID reader, which identifies the informationaccordingly and facilitates the checking in and/or checking out of theitem. In one embodiment, when the device is returned to the library, theRFID reader picks up the information from the RFID transponderincorporated on the device and automatically identifies and facilitatesthe check in process of the device at the library.

In one embodiment, the RFID transponder functions as a security devicefor an electronic device that incorporates the RFID transponder directlyinto the electronic device. The RFID transponder sends a signal to asecurity gate which includes an RFID reader and is positioned at aparticular location as the device passes through the gate. The RFIDtransponder allows the device to be detected and/or checked out. Suchsecurity gate may be included at a retailer selling the device, a rentalstore renting the device, or a library maintaining the device.

In one embodiment, the RFID transponder enables automatic check inand/or check out of an electronic device that incorporates the RFIDtransponder directly into the electronic device. When an REID reader isprovided, the device with the RFID transponder can be automaticallydetected for checking in and checking out process.

In one embodiment, the RFID transponder facilitates sorting of a devicereturned to a particular location such as a library or a rental store.When an electronic device includes an RFID transponder that isincorporated directly into the device, when the device is return toappropriate location where an REID reader is placed, the item isdetected and automatically checked in. In one embodiment, an REID-enableautomatic sorter is provided. The REID-enable automatic sorter picks upsignal from the RFID transponder on the device, automatically checks inthe device, and automatically sorts and/or places the device into anappropriate location/container according to the information provided inthe RFID transponder.

In one embodiment, the RFID transponder facilitates shelving,organizing, locating, identifying, or tracking, or other similar task anelectronic device that incorporates the RFID transponder directly intothe electronic device. An REID reader is provided. The RFID reader canscan or pick up signals from the device's REID transponder and enters orchecks the location of the device which facilitates shelving,organizing, locating, identifying, tracking, or other similar task ofthe device.

Other aspects of the invention relate to content protection. Forexample, an REID IC may be integrated with a device such as a CD or DVDand may, (in addition to or an alternative to identifying, through acontactless, wireless manner, the particular CD or the content on theCD) provide a way to prevent successful copying of the CD, DVD, or othermachine readable medium. In this example, the RFID IC is embedded withinthe CD itself and may be read by a reader in the CD player. The RFID ICmay transmit a code (which may be encoded or encrypted) to the reader inthe CD player (or within the system which includes the CD player), andthe CD player can process this code to determine whether the CD isauthentic (and not a pirated copy). There are numerous possibleimplementations for protecting the content of a CD or other machinereadable media with an RFID IC embedded within the storage medium suchas a CD.

One implementation may merely involve wireless by reading a code orvalue from the RFID IC when the machine readable medium (which containsthe RFID IC) is placed into a playback device (e.g., a CD player) andcomparing this code or value to a code or value read from the machinereadable medium. If the codes or values match, then the playback device“knows” that the machine readable medium is authentic. If the codes orvalues do not match, then the playback device “knows” that the machinereadable medium is NOT authentic and the playback device will refuse toplayback (or otherwise interact with) the medium and may cause themedium to be ejected. The playback device would normally include astandard playback device (e.g., a CD laser and head and associatedelectronics and motors) and an RFID reader which transmits aninterrogation signal to the RFID IC in the machine readable medium andwhich receives a response from the transponding RFID IC which isembedded with the machine readable medium which is inserted into theplayback device.

FIG. 25 shows an example of a playback system for use in one exemplaryaspect of the invention. The playback system 2501 may be a stand-aloneCD player or DVD player or may be part of a larger system (e.g., theplayback system 2501 may be a CD/DVD drive in a general purpose computersystem). The playback system 2501 is designed to receive a machinereadable medium 2503 (which may be a CD, DVD, etc.) which includes anREID IC 2502. The RFID IC 2502 includes one or more codes or valueswhich identify the medium and which can also be used to preventsuccessful copying of the content stored on the medium. A drive system2505 receives the medium 2503 and positions the medium 2503 relative toa read head (e.g., a CD laser and detector head). The drive system 2505is coupled to and controlled by the control logic 2509. The controllogic 2509 controls the drive system 2505 and also controls theoperation of and receives signals (e.g., codes or values) from the RFIDreader 2507. These signals are obtained from the REID IC. TheInput/Output (“I/O”) control 2511 is coupled to the control logic 2509in order to provide an output and/or input to the playback system 2501.The I/O control 2511 may receive audio or audiovisual data from themedium 2503 and provide this data to speakers or a display device or toanother subsystem (e.g., portions of a computer or TV). The controllogic 2509 may perform the comparisons described above (e.g., matching acode from the REID IC with a code stored in the medium 2503) in order toverify that the medium is authentic. Other alternative playbackarchitectures may be implemented with an REID reader which reads an RFIDIC embedded with a machine readable medium.

Another exemplary implementation may, rather than merely determiningwhether a value read from the RFID IC matches a value read from themachine readable medium which contains the RFID IC, use an encodingscheme or encryption scheme to make copying difficult. One or morevalues stored in the RFID IC may be encoded and/or encrypted and one ormore values stored on the machine readable medium may also be encodedand/or encrypted, and the playback device processes these values todetermine whether the content of the machine readable medium isauthentic. For example, if each CD or other medium from a particularsource (e.g., Microsoft) has a serial number, that serial number may beencrypted (e.g., with a private key of a public key/private key system)and stored in the RFID IC. When the playback device reads the RFID IC,it retrieves this encrypted serial number and decrypts this number(e.g., with the source's public key) to obtain the unencrypted (“clear”)serial number and compares this serial number from the RFID IC to theserial number stored on the medium. If there is a match then the mediumis authentic and if there is no match then it is not authentic. Numerousother encoding schemes or encryption schemes which are known in the artmay alternatively be applied.

While the invention has been described in terms of several embodiments,those of ordinary skill in the art will recognize that the invention isnot limited to the embodiments described. The method and apparatus ofthe invention, but can be practiced with modification and alterationwithin the spirit and scope of the appended claims. The description isthus to be regarded as illustrative instead of limiting.

Having disclosed exemplary embodiments, modifications and variations maybe made to the disclosed embodiments while remaining within the spiritand scope of the invention as defined by the appended claims.

1. A method for authenticating a machine readable medium comprising:reading, by a playback device, an encrypted first code from a radiofrequency identification integrated circuit, the a radio frequencyidentification integrated circuit coupled to a machine readable mediumplaced inside the playback device; authenticating, by the playbackdevice, the machine readable medium using the encrypted first code and asecond code stored on the machine readable medium.
 2. The method ofclaim 1 further comprising disabling playback of the machine readablemedium if the machine readable medium fails the authenticating.
 3. Themethod of claim 1 further comprising ejecting the machine readablemedium from the playback device if the machine readable medium fails theauthenticating.
 4. The method of claim 1 wherein the machine readablemedium is a disk.
 5. The method of claim 4 wherein the radio frequencyidentification integrated circuit is coupled to a center ring of thedisk.
 6. The method of claim 4 wherein the disk is balanced despite theradio frequency identification integrated circuit coupled to the disk.7. The method of claim 6 wherein the disk further comprises one or moreweight balancing components.
 8. The method of claim 1 wherein themachine readable medium is a DVD.
 9. The method of claim 1 whereinreading the encrypted first code uses a 13.56 MHz radio frequencysignal.
 10. The method of claim 1 wherein reading the encrypted firstcode uses a radio frequency signal between 800 MHz to 3 GHz.
 11. Themethod of claim 1 further comprising decrypting the first code prior tothe authenticating.
 12. The method of claim 1 wherein the second code isencrypted.
 13. A method for authenticating a machine readable mediumcomprising: placing the machine readable medium in a playback device;reading a first code from a radio frequency identification integratedcircuit, the a radio frequency identification integrated circuit coupledto the machine readable medium; comparing the first code to a secondcode stored on the machine readable medium.
 14. The method of claim 13further comprising disabling playback of the machine readable medium ifthe machine readable medium is not authenticated by the comparing. 15.The method of claim 13 wherein the machine readable medium comprises adisk.
 16. The method of claim 13 wherein the radio frequencyidentification integrated circuit is coupled to a center ring of a disk.17. The method of claim 13 wherein the first code is encrypted.
 18. Themethod of claim 13 wherein reading the first code uses a 13.56 MHz radiofrequency signal.
 19. The method of claim 13 wherein reading theencrypted first code uses a radio frequency signal between 800 MHz to 3GHz.
 20. A playback device for reading a machine readable medium, thedevice comprising: a laser, a reader to read a first code from a radiofrequency identification integrated circuit, the radio frequencyidentification integrated circuit coupled to the machine readablemedium; and electronics to authenticate the machine readable mediumusing the first code and a second code stored on the machine readablemedium.
 21. The device of claim 20 wherein the electronics disablesplayback of the machine readable medium if the machine readable mediumis not authenticated.
 22. A disk comprising: a radio frequencyidentification integrated circuit, the radio frequency identificationintegrated circuit storing a first code; a metallization layer storingvideo information and a second code, wherein the disk is balanced duringplayback despite the radio frequency identification integrated circuit.23. The disk of claim 22 further comprising one or more weight balancingcomponents.
 24. The disk of claim 22 wherein the radio frequencyidentification integrated circuit is configured for interrogation by a13.56 MHz radio frequency signal.
 25. The disk of claim 22 wherein theradio frequency identification integrated circuit is configured forinterrogation by a radio frequency signal between 800 MHz to 3 GHz.